Hi OCS, Well I think part of the problem may be this question has been asked many many times by the same people, and the responses are always the same, it works for me but it doesnt for you, I think your problem may be the drastic difference in your early period start date, I have found some inconsistencies with the SetGameEndDate command myself, but have always managed to make it work.I would suggest some experiments with a integer more akin to your other eras, let me ask what it is you are trying to achieve, just a long campaign? are the dates critical?
let me know, and I will try to help as I have done before...LOS